CN203719734U - Guided wave radar high-medium-low pressure double-color water gauge - Google Patents

Abstract

The utility model discloses a guided wave radar high-medium-low pressure double-color water gauge which comprises a balancing pipe and a measurement pipe. The measurement pipe is provided with a top cover, a guided wave radar material level instrument is installed on the top cover in a sealing mode and provided with a meter and a rod type probe, wherein the rod type probe extends into the bottom of the measurement pipe, the upper portion and the lower portion of the balancing pipe located on the same side are provided with a steam inlet pipe and a liquid inlet pipe communicated with a boiler drum, the upper portion and the lower portion of the balancing pipe located on the opposite sides are communicated with the measurement pipe through a steam valve and a water valve, the water valve is connected with a first blow-down valve, and the bottom of the measurement pipe is connected with a second blow-down valve. The guided wave radar high-medium-low pressure double-color water gauge is not influenced by the process conditions when the drum liquid level is measured, and is high in measurement accuracy, simple and convenient to install and debug and low in maintenance cost.

Description

Guided wave radar high, medium and low pressure two-color water level gauge

technical field

The utility model relates to a water level gauge for measuring the water level of a boiler drum, in particular to a guided wave radar, high, medium and low pressure two-color water level gauge for measuring the water level of a boiler drum.

Background technique

Water level gauges used for boiler drum liquid level measurement, commonly include two-color water level gauges and magnetic float water level gauges. The two-color water level gauge measures the liquid level of the liquid in the boiler drum based on the principle of the connector. The body of the water level gauge is connected to the steam drum through the steam inlet pipe and the liquid inlet pipe. The height of the liquid level in the liquid level gauge is the liquid level in the boiler drum. According to the optical principle, the effect of gas red and liquid green can be produced to display the height of the liquid level in the boiler drum. However, the sealing parts and heat insulation parts of the observation window of the two-color liquid level gauge are mainly mica sheets. The service life of the material is short, generally about half a year, so it is necessary to frequently replace the mica sheet spare parts of the two-color liquid level gauge, which increases the labor intensity of the workers on the one hand, and also increases the maintenance cost of the two-color liquid level gauge. The magnetic float water level gauge also uses the principle of the connector to form a connector through the steam inlet pipe and the liquid inlet pipe and the steam drum, and then determines the liquid level in the boiler drum according to the magnetic rotor of the water level indicator on the body due to the magnetic field action of the float. Height, due to the high temperature and high pressure environment in the boiler drum, the specific gravity of water changes greatly under high temperature and high pressure conditions, and the corresponding buoyancy also changes greatly, and the floating height of the magnetic float will change greatly under the influence of buoyancy. The measured liquid level will be inaccurate.

Utility model content

The technical problem to be solved by the utility model is to provide a guided wave radar, high, medium and low pressure two-color water level gauge. When the utility model is used to measure the boiler steam drum liquid level, the accuracy of the liquid level measurement will not be affected by the high temperature and high pressure environment in the boiler steam drum, and There is no need to frequently replace the spare parts of the liquid level gauge, the liquid level measurement accuracy is high, and the maintenance is convenient.

In order to solve the above-mentioned technical problems, the utility model guided wave radar, high, medium and low pressure two-color water level gauge includes a balance tube and a measuring tube. The level meter has a meter and a rod probe, and the rod probe extends into the bottom of the measuring tube, and the upper and lower parts of the same side of the balance tube are provided with a steam inlet pipe and a liquid inlet pipe for communicating with the boiler steam drum, The upper part and the lower part of the opposite side are connected with the measuring pipe through a steam valve and a water valve, the water valve is connected with a first blowdown valve, and the bottom of the measuring pipe is connected with a second blowdown valve.

The guided wave radar high, medium and low pressure two-color water level gauge with the above structure is in use. The steam inlet pipe and liquid inlet pipe of the balance pipe are connected with the boiler steam drum, so that the utility model and the boiler steam drum form a connecting device structure, and the inside of the measuring cylinder The liquid level in the boiler drum is consistent with the liquid level in the boiler drum. The high-frequency pulse signal generated by the instrument of the guided wave radar level meter sealed on the top cover of the measuring tube is transmitted to the rod probe and propagates along the probe. The signal is reflected on the surface of the liquid level, and the reflected signal is received by the instrument and converted into level information. The utility model has a simple measurement principle and is not affected by process conditions, so the measurement accuracy will not be affected, and the installation and debugging Simple and low maintenance cost. In addition, the balance pipe can stabilize the liquid level, so that the utility model can measure the liquid level in the steam drum of the liquid boiler more accurately, and the sewage valve can discharge the sewage regularly.

As a further improvement of the utility model, it also includes a two-color light column display instrument for displaying the water level. The signal output end of the instrument of the guided wave radar level meter is connected with the signal input end of the two-color light column display instrument. The meter of the meter is installed on the housing of the two-color bar display meter. By adding a two-color light column display instrument, the observation of the liquid level of the utility model can be made more intuitive, and the liquid level of the steam drum can be observed at a relatively long distance, and the instrument of the guided wave radar level meter is set on the shell of the two-color light column display instrument , can avoid damage to the instrument of the guided wave radar level meter by the high temperature water heat radiation in the measuring cylinder.

The utility model can also be combined with a remote monitoring system, and the instrument signal output end of the guided wave radar level meter of the utility model is connected with the remote monitoring system to realize remote monitoring and remote display.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is a schematic diagram of the structural composition of a guided wave radar, high, medium and low pressure two-color water level gauge proposed according to the technical solution of the utility model.

Fig. 2 is a schematic diagram of the structural composition of another guided wave radar, high, medium and low pressure two-color water level gauge proposed according to the technical solution of the utility model.

Detailed ways

Referring first to Fig. 1, the utility model guided wave radar, high, medium and low pressure two-color water level gauge comprises a balance tube 1 and a measuring tube 2, the measuring tube 2 has a top cover 3, and the top cover 3 is sealed with a guided wave radar level gauge ( The guided wave radar level meter needs to be purchased by yourself), the guided wave radar level meter has an instrument 4 and a rod probe 5, the rod probe 5 extends into the bottom of the measuring tube 2, and the balance tube 1 on the same side The upper and lower parts are provided with a steam inlet pipe 6 and a liquid inlet pipe 7 for communicating with the boiler drum, and the upper and lower parts on the opposite side communicate with the measuring pipe 2 through a steam valve 8 and a water valve 9, The water valve 9 is connected with a first blowdown valve 10 , and the bottom of the measuring pipe 2 is connected with a second blowdown valve 11 .

Referring to Fig. 2, the utility model can also include a two-color light column display instrument 12 for displaying the water level (the two-color light column display instrument can be purchased or designed by itself according to needs), the signal output of the instrument 4 of the guided wave radar level meter The end is connected with the signal input end of the two-color light column display instrument 12, and the instrument 4 of the guided wave radar level meter is installed on the housing 13 of the two-color light column display instrument 12.

The utility model can also be combined with a remote monitoring system, and the instrument signal output end of the guided wave radar level meter of the utility model is connected with the remote monitoring system to realize remote monitoring and remote display.

Claims (2)

1. A guided wave radar high, medium and low pressure two-color water level gauge, characterized in that it includes a balance tube (1) and a measuring tube (2), the measuring tube (2) has a top cover (3), and the top cover (3) It is sealed with a guided wave radar level instrument, and the guided wave radar level instrument has an instrument (4) and a rod probe (5). The rod probe (5) extends into the bottom of the measuring tube (2), and the The upper and lower parts of the same side of the balance pipe (1) are provided with a steam inlet pipe (6) and a liquid inlet pipe (7) for communicating with the boiler steam drum, and the upper and lower parts of the opposite side pass through the steam valve (8 ) and the water valve (9) are connected with the measuring pipe (2), the water valve (9) is connected with the first blowdown valve (10), and the bottom of the measuring pipe (2) is connected with the second blowdown valve (11). 2. According to the guided wave radar high, medium and low pressure two-color water level gauge according to claim 1, it is characterized in that: it also includes a two-color light column display instrument (12) for displaying the water level, and the instrument (4) of the guided wave radar level gauge The signal output end of the two-color light column display instrument (12) is connected to the signal input end of the instrument (12), and the instrument (4) of the guided wave radar level meter is installed on the housing (13) of the two-color light column display instrument (12).